Low-swelling smectite in a recent marine mud of Ariake Bay

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Abstract
A low-swelling smectite was found in a recent marine mud of Ariake Bay. The Na-clay of this mud swells but to the same extent as the Ca-clay and its dominant interparticle force is not repulsion between individual particles. The sediment volume at low salt concentration and the specific viscosity of the Na-clay were almost equal to those of the Ca-clay. The liquid limit of the Na-mud decreased with decreasing NaCl concentration and was lower than that of the Ca-mud.

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